Depreciation by Three Methods; Partial Years

Perdue Company purchased equipment on April $1$ for $$45,090.$ The equipment was expected to have a useful life of three years, or $4,860$ operating hours, and a residual value of $$1,350.$ The equipment was used for $900$ hours during Year $1,1,700$ hours in Year $2,1,500$ hours in Year $3,$ and $760$ hours in Year $4.$

Deawired.

A method of depreciation that provides for equal periodic depreciation expense over the estimated life of a fixed asset.

Determine the amount of depreciation expense for the years ended December $31,$ Year $1,$ Year $2,$ Year $3,$ and Year $4,$ by $($a$)$ the straightline method, $($b$)$ units$-$of$-$activity method, and $($c$)$ the double$-$declining$-$balance method.

Note: FOR DECLINING BALANCE ONLY, round the multiplier to four decimal places. Then round the answer for each year to the nearest whole dollar.

a$.$ Straight$-$line method

b$.$ Units$-$of$-$activity method